This novel was called "The Reborn Daughter Comes to Counterattack". It was an ancient romance novel about a fight in the palace. It told the story of Gu Chang 'an and the black-bellied man Beiming Huxin, who plotted against each other after his rebirth. They galloped on the battlefield, raised their hands, and slashed down. Chang' an was omnipotent. The male protagonist's name was Beiming Hu, but it was slightly different from the name in the question. I hope you like this fairy's recommendation. Muah ~😗